Computer Engineering and Applications ›› 2014, Vol. 50 ›› Issue (1): 200-202.
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DONG Shuaifei, YU Fengqin
Online:
Published:
董帅飞,于凤芹
Abstract: According to the non-stationary characteristics of Chinese initials. A Chinese initials time-frequency structure analysis method based on the Chirp atoms Matching Pursuit(MP) decomposition is proposed. Simulation results show that compared with the direct Wigner-Ville Distribution(WVD), the new method has no cross-terms;compared with the Gabor atoms decomposition, when the reconstruction initials signal energy reaches 90%, it can extract the initials time-frequency characteristic parameters more accurate, and the number of atoms used and time-consuming in the new method account for 30.77% and 24.53% of Gabor atoms decomposition respectively, confirming the superiority of the method.
Key words: Chinese initials, Matching Pursuit(MP), Chirp atoms, time-frequency structure
摘要: 针对汉语声母语音呈现的非平稳特性,提出一种基于Chirp原子MP分解的汉语声母时频结构分析方法。实验仿真结果表明,该方法与直接WVD相比,无交叉项干扰,与Gabor原子分解相比,在重构声母信号90%能量情况下,不仅更加准确地提取了声母的时频特征参数,且采用原子个数和耗费时间分别为Gabor原子分解的30.77%和24.53%,证实了该方法的优越性。
关键词: 汉语声母, 匹配追逐(MP), Chirp原子, 时频结构
DONG Shuaifei, YU Fengqin. Chinese initials time-frequency structure analysis based on Chirp atoms MP decomposition[J]. Computer Engineering and Applications, 2014, 50(1): 200-202.
董帅飞,于凤芹. 基于Chirp原子MP分解的汉语声母时频结构分析[J]. 计算机工程与应用, 2014, 50(1): 200-202.
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http://cea.ceaj.org/EN/Y2014/V50/I1/200